1 /******************************************************************************* 2 3 Intel 10 Gigabit PCI Express Linux driver 4 Copyright(c) 1999 - 2012 Intel Corporation. 5 6 This program is free software; you can redistribute it and/or modify it 7 under the terms and conditions of the GNU General Public License, 8 version 2, as published by the Free Software Foundation. 9 10 This program is distributed in the hope it will be useful, but WITHOUT 11 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 12 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for 13 more details. 14 15 You should have received a copy of the GNU General Public License along with 16 this program; if not, write to the Free Software Foundation, Inc., 17 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. 18 19 The full GNU General Public License is included in this distribution in 20 the file called "COPYING". 21 22 Contact Information: 23 e1000-devel Mailing List <e1000-devel@lists.sourceforge.net> 24 Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 25 26 *******************************************************************************/ 27 28 #include <linux/types.h> 29 #include <linux/module.h> 30 #include <linux/pci.h> 31 #include <linux/netdevice.h> 32 #include <linux/vmalloc.h> 33 #include <linux/string.h> 34 #include <linux/in.h> 35 #include <linux/ip.h> 36 #include <linux/tcp.h> 37 #include <linux/ipv6.h> 38 #ifdef NETIF_F_HW_VLAN_TX 39 #include <linux/if_vlan.h> 40 #endif 41 42 #include "ixgbe.h" 43 #include "ixgbe_type.h" 44 #include "ixgbe_sriov.h" 45 46 #ifdef CONFIG_PCI_IOV 47 void ixgbe_enable_sriov(struct ixgbe_adapter *adapter, 48 const struct ixgbe_info *ii) 49 { 50 struct ixgbe_hw *hw = &adapter->hw; 51 int num_vf_macvlans, i; 52 struct vf_macvlans *mv_list; 53 int pre_existing_vfs = 0; 54 55 pre_existing_vfs = pci_num_vf(adapter->pdev); 56 if (!pre_existing_vfs && !adapter->num_vfs) 57 return; 58 59 /* If there are pre-existing VFs then we have to force 60 * use of that many because they were not deleted the last 61 * time someone removed the PF driver. That would have 62 * been because they were allocated to guest VMs and can't 63 * be removed. Go ahead and just re-enable the old amount. 64 * If the user wants to change the number of VFs they can 65 * use ethtool while making sure no VFs are allocated to 66 * guest VMs... i.e. the right way. 67 */ 68 if (pre_existing_vfs) { 69 adapter->num_vfs = pre_existing_vfs; 70 dev_warn(&adapter->pdev->dev, "Virtual Functions already " 71 "enabled for this device - Please reload all " 72 "VF drivers to avoid spoofed packet errors\n"); 73 } else { 74 int err; 75 /* 76 * The 82599 supports up to 64 VFs per physical function 77 * but this implementation limits allocation to 63 so that 78 * basic networking resources are still available to the 79 * physical function. If the user requests greater thn 80 * 63 VFs then it is an error - reset to default of zero. 81 */ 82 adapter->num_vfs = min_t(unsigned int, adapter->num_vfs, 63); 83 84 err = pci_enable_sriov(adapter->pdev, adapter->num_vfs); 85 if (err) { 86 e_err(probe, "Failed to enable PCI sriov: %d\n", err); 87 adapter->num_vfs = 0; 88 return; 89 } 90 } 91 92 adapter->flags |= IXGBE_FLAG_SRIOV_ENABLED; 93 e_info(probe, "SR-IOV enabled with %d VFs\n", adapter->num_vfs); 94 95 /* Enable VMDq flag so device will be set in VM mode */ 96 adapter->flags |= IXGBE_FLAG_VMDQ_ENABLED; 97 if (!adapter->ring_feature[RING_F_VMDQ].limit) 98 adapter->ring_feature[RING_F_VMDQ].limit = 1; 99 adapter->ring_feature[RING_F_VMDQ].offset = adapter->num_vfs; 100 101 num_vf_macvlans = hw->mac.num_rar_entries - 102 (IXGBE_MAX_PF_MACVLANS + 1 + adapter->num_vfs); 103 104 adapter->mv_list = mv_list = kcalloc(num_vf_macvlans, 105 sizeof(struct vf_macvlans), 106 GFP_KERNEL); 107 if (mv_list) { 108 /* Initialize list of VF macvlans */ 109 INIT_LIST_HEAD(&adapter->vf_mvs.l); 110 for (i = 0; i < num_vf_macvlans; i++) { 111 mv_list->vf = -1; 112 mv_list->free = true; 113 mv_list->rar_entry = hw->mac.num_rar_entries - 114 (i + adapter->num_vfs + 1); 115 list_add(&mv_list->l, &adapter->vf_mvs.l); 116 mv_list++; 117 } 118 } 119 120 /* If call to enable VFs succeeded then allocate memory 121 * for per VF control structures. 122 */ 123 adapter->vfinfo = 124 kcalloc(adapter->num_vfs, 125 sizeof(struct vf_data_storage), GFP_KERNEL); 126 if (adapter->vfinfo) { 127 /* Now that we're sure SR-IOV is enabled 128 * and memory allocated set up the mailbox parameters 129 */ 130 ixgbe_init_mbx_params_pf(hw); 131 memcpy(&hw->mbx.ops, ii->mbx_ops, sizeof(hw->mbx.ops)); 132 133 /* limit trafffic classes based on VFs enabled */ 134 if ((adapter->hw.mac.type == ixgbe_mac_82599EB) && 135 (adapter->num_vfs < 16)) { 136 adapter->dcb_cfg.num_tcs.pg_tcs = MAX_TRAFFIC_CLASS; 137 adapter->dcb_cfg.num_tcs.pfc_tcs = MAX_TRAFFIC_CLASS; 138 } else if (adapter->num_vfs < 32) { 139 adapter->dcb_cfg.num_tcs.pg_tcs = 4; 140 adapter->dcb_cfg.num_tcs.pfc_tcs = 4; 141 } else { 142 adapter->dcb_cfg.num_tcs.pg_tcs = 1; 143 adapter->dcb_cfg.num_tcs.pfc_tcs = 1; 144 } 145 146 /* We do not support RSS w/ SR-IOV */ 147 adapter->ring_feature[RING_F_RSS].limit = 1; 148 149 /* Disable RSC when in SR-IOV mode */ 150 adapter->flags2 &= ~(IXGBE_FLAG2_RSC_CAPABLE | 151 IXGBE_FLAG2_RSC_ENABLED); 152 153 #ifdef IXGBE_FCOE 154 /* 155 * When SR-IOV is enabled 82599 cannot support jumbo frames 156 * so we must disable FCoE because we cannot support FCoE MTU. 157 */ 158 if (adapter->hw.mac.type == ixgbe_mac_82599EB) 159 adapter->flags &= ~(IXGBE_FLAG_FCOE_ENABLED | 160 IXGBE_FLAG_FCOE_CAPABLE); 161 #endif 162 163 /* enable spoof checking for all VFs */ 164 for (i = 0; i < adapter->num_vfs; i++) 165 adapter->vfinfo[i].spoofchk_enabled = true; 166 return; 167 } 168 169 /* Oh oh */ 170 e_err(probe, "Unable to allocate memory for VF Data Storage - " 171 "SRIOV disabled\n"); 172 ixgbe_disable_sriov(adapter); 173 } 174 175 static bool ixgbe_vfs_are_assigned(struct ixgbe_adapter *adapter) 176 { 177 struct pci_dev *pdev = adapter->pdev; 178 struct pci_dev *vfdev; 179 int dev_id; 180 181 switch (adapter->hw.mac.type) { 182 case ixgbe_mac_82599EB: 183 dev_id = IXGBE_DEV_ID_82599_VF; 184 break; 185 case ixgbe_mac_X540: 186 dev_id = IXGBE_DEV_ID_X540_VF; 187 break; 188 default: 189 return false; 190 } 191 192 /* loop through all the VFs to see if we own any that are assigned */ 193 vfdev = pci_get_device(PCI_VENDOR_ID_INTEL, dev_id, NULL); 194 while (vfdev) { 195 /* if we don't own it we don't care */ 196 if (vfdev->is_virtfn && vfdev->physfn == pdev) { 197 /* if it is assigned we cannot release it */ 198 if (vfdev->dev_flags & PCI_DEV_FLAGS_ASSIGNED) 199 return true; 200 } 201 202 vfdev = pci_get_device(PCI_VENDOR_ID_INTEL, dev_id, vfdev); 203 } 204 205 return false; 206 } 207 208 #endif /* #ifdef CONFIG_PCI_IOV */ 209 void ixgbe_disable_sriov(struct ixgbe_adapter *adapter) 210 { 211 struct ixgbe_hw *hw = &adapter->hw; 212 u32 gpie; 213 u32 vmdctl; 214 215 /* set num VFs to 0 to prevent access to vfinfo */ 216 adapter->num_vfs = 0; 217 218 /* free VF control structures */ 219 kfree(adapter->vfinfo); 220 adapter->vfinfo = NULL; 221 222 /* free macvlan list */ 223 kfree(adapter->mv_list); 224 adapter->mv_list = NULL; 225 226 /* if SR-IOV is already disabled then there is nothing to do */ 227 if (!(adapter->flags & IXGBE_FLAG_SRIOV_ENABLED)) 228 return; 229 230 #ifdef CONFIG_PCI_IOV 231 /* 232 * If our VFs are assigned we cannot shut down SR-IOV 233 * without causing issues, so just leave the hardware 234 * available but disabled 235 */ 236 if (ixgbe_vfs_are_assigned(adapter)) { 237 e_dev_warn("Unloading driver while VFs are assigned - VFs will not be deallocated\n"); 238 return; 239 } 240 /* disable iov and allow time for transactions to clear */ 241 pci_disable_sriov(adapter->pdev); 242 #endif 243 244 /* turn off device IOV mode */ 245 IXGBE_WRITE_REG(hw, IXGBE_GCR_EXT, 0); 246 gpie = IXGBE_READ_REG(hw, IXGBE_GPIE); 247 gpie &= ~IXGBE_GPIE_VTMODE_MASK; 248 IXGBE_WRITE_REG(hw, IXGBE_GPIE, gpie); 249 250 /* set default pool back to 0 */ 251 vmdctl = IXGBE_READ_REG(hw, IXGBE_VT_CTL); 252 vmdctl &= ~IXGBE_VT_CTL_POOL_MASK; 253 IXGBE_WRITE_REG(hw, IXGBE_VT_CTL, vmdctl); 254 IXGBE_WRITE_FLUSH(hw); 255 256 /* Disable VMDq flag so device will be set in VM mode */ 257 if (adapter->ring_feature[RING_F_VMDQ].limit == 1) 258 adapter->flags &= ~IXGBE_FLAG_VMDQ_ENABLED; 259 adapter->ring_feature[RING_F_VMDQ].offset = 0; 260 261 /* take a breather then clean up driver data */ 262 msleep(100); 263 264 adapter->flags &= ~IXGBE_FLAG_SRIOV_ENABLED; 265 } 266 267 static int ixgbe_set_vf_multicasts(struct ixgbe_adapter *adapter, 268 int entries, u16 *hash_list, u32 vf) 269 { 270 struct vf_data_storage *vfinfo = &adapter->vfinfo[vf]; 271 struct ixgbe_hw *hw = &adapter->hw; 272 int i; 273 u32 vector_bit; 274 u32 vector_reg; 275 u32 mta_reg; 276 277 /* only so many hash values supported */ 278 entries = min(entries, IXGBE_MAX_VF_MC_ENTRIES); 279 280 /* 281 * salt away the number of multi cast addresses assigned 282 * to this VF for later use to restore when the PF multi cast 283 * list changes 284 */ 285 vfinfo->num_vf_mc_hashes = entries; 286 287 /* 288 * VFs are limited to using the MTA hash table for their multicast 289 * addresses 290 */ 291 for (i = 0; i < entries; i++) { 292 vfinfo->vf_mc_hashes[i] = hash_list[i]; 293 } 294 295 for (i = 0; i < vfinfo->num_vf_mc_hashes; i++) { 296 vector_reg = (vfinfo->vf_mc_hashes[i] >> 5) & 0x7F; 297 vector_bit = vfinfo->vf_mc_hashes[i] & 0x1F; 298 mta_reg = IXGBE_READ_REG(hw, IXGBE_MTA(vector_reg)); 299 mta_reg |= (1 << vector_bit); 300 IXGBE_WRITE_REG(hw, IXGBE_MTA(vector_reg), mta_reg); 301 } 302 303 return 0; 304 } 305 306 static void ixgbe_restore_vf_macvlans(struct ixgbe_adapter *adapter) 307 { 308 struct ixgbe_hw *hw = &adapter->hw; 309 struct list_head *pos; 310 struct vf_macvlans *entry; 311 312 list_for_each(pos, &adapter->vf_mvs.l) { 313 entry = list_entry(pos, struct vf_macvlans, l); 314 if (!entry->free) 315 hw->mac.ops.set_rar(hw, entry->rar_entry, 316 entry->vf_macvlan, 317 entry->vf, IXGBE_RAH_AV); 318 } 319 } 320 321 void ixgbe_restore_vf_multicasts(struct ixgbe_adapter *adapter) 322 { 323 struct ixgbe_hw *hw = &adapter->hw; 324 struct vf_data_storage *vfinfo; 325 int i, j; 326 u32 vector_bit; 327 u32 vector_reg; 328 u32 mta_reg; 329 330 for (i = 0; i < adapter->num_vfs; i++) { 331 vfinfo = &adapter->vfinfo[i]; 332 for (j = 0; j < vfinfo->num_vf_mc_hashes; j++) { 333 hw->addr_ctrl.mta_in_use++; 334 vector_reg = (vfinfo->vf_mc_hashes[j] >> 5) & 0x7F; 335 vector_bit = vfinfo->vf_mc_hashes[j] & 0x1F; 336 mta_reg = IXGBE_READ_REG(hw, IXGBE_MTA(vector_reg)); 337 mta_reg |= (1 << vector_bit); 338 IXGBE_WRITE_REG(hw, IXGBE_MTA(vector_reg), mta_reg); 339 } 340 } 341 342 /* Restore any VF macvlans */ 343 ixgbe_restore_vf_macvlans(adapter); 344 } 345 346 static int ixgbe_set_vf_vlan(struct ixgbe_adapter *adapter, int add, int vid, 347 u32 vf) 348 { 349 /* VLAN 0 is a special case, don't allow it to be removed */ 350 if (!vid && !add) 351 return 0; 352 353 return adapter->hw.mac.ops.set_vfta(&adapter->hw, vid, vf, (bool)add); 354 } 355 356 static void ixgbe_set_vf_lpe(struct ixgbe_adapter *adapter, u32 *msgbuf) 357 { 358 struct ixgbe_hw *hw = &adapter->hw; 359 int new_mtu = msgbuf[1]; 360 u32 max_frs; 361 int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN; 362 363 /* Only X540 supports jumbo frames in IOV mode */ 364 if (adapter->hw.mac.type != ixgbe_mac_X540) 365 return; 366 367 /* MTU < 68 is an error and causes problems on some kernels */ 368 if ((new_mtu < 68) || (max_frame > IXGBE_MAX_JUMBO_FRAME_SIZE)) { 369 e_err(drv, "VF mtu %d out of range\n", new_mtu); 370 return; 371 } 372 373 max_frs = (IXGBE_READ_REG(hw, IXGBE_MAXFRS) & 374 IXGBE_MHADD_MFS_MASK) >> IXGBE_MHADD_MFS_SHIFT; 375 if (max_frs < new_mtu) { 376 max_frs = new_mtu << IXGBE_MHADD_MFS_SHIFT; 377 IXGBE_WRITE_REG(hw, IXGBE_MAXFRS, max_frs); 378 } 379 380 e_info(hw, "VF requests change max MTU to %d\n", new_mtu); 381 } 382 383 static void ixgbe_set_vmolr(struct ixgbe_hw *hw, u32 vf, bool aupe) 384 { 385 u32 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(vf)); 386 vmolr |= (IXGBE_VMOLR_ROMPE | 387 IXGBE_VMOLR_BAM); 388 if (aupe) 389 vmolr |= IXGBE_VMOLR_AUPE; 390 else 391 vmolr &= ~IXGBE_VMOLR_AUPE; 392 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(vf), vmolr); 393 } 394 395 static void ixgbe_set_vmvir(struct ixgbe_adapter *adapter, u32 vid, u32 vf) 396 { 397 struct ixgbe_hw *hw = &adapter->hw; 398 399 if (vid) 400 IXGBE_WRITE_REG(hw, IXGBE_VMVIR(vf), 401 (vid | IXGBE_VMVIR_VLANA_DEFAULT)); 402 else 403 IXGBE_WRITE_REG(hw, IXGBE_VMVIR(vf), 0); 404 } 405 406 static inline void ixgbe_vf_reset_event(struct ixgbe_adapter *adapter, u32 vf) 407 { 408 struct ixgbe_hw *hw = &adapter->hw; 409 int rar_entry = hw->mac.num_rar_entries - (vf + 1); 410 411 /* reset offloads to defaults */ 412 if (adapter->vfinfo[vf].pf_vlan) { 413 ixgbe_set_vf_vlan(adapter, true, 414 adapter->vfinfo[vf].pf_vlan, vf); 415 ixgbe_set_vmvir(adapter, 416 (adapter->vfinfo[vf].pf_vlan | 417 (adapter->vfinfo[vf].pf_qos << 418 VLAN_PRIO_SHIFT)), vf); 419 ixgbe_set_vmolr(hw, vf, false); 420 } else { 421 ixgbe_set_vf_vlan(adapter, true, 0, vf); 422 ixgbe_set_vmvir(adapter, 0, vf); 423 ixgbe_set_vmolr(hw, vf, true); 424 } 425 426 /* reset multicast table array for vf */ 427 adapter->vfinfo[vf].num_vf_mc_hashes = 0; 428 429 /* Flush and reset the mta with the new values */ 430 ixgbe_set_rx_mode(adapter->netdev); 431 432 hw->mac.ops.clear_rar(hw, rar_entry); 433 } 434 435 static int ixgbe_set_vf_mac(struct ixgbe_adapter *adapter, 436 int vf, unsigned char *mac_addr) 437 { 438 struct ixgbe_hw *hw = &adapter->hw; 439 int rar_entry = hw->mac.num_rar_entries - (vf + 1); 440 441 memcpy(adapter->vfinfo[vf].vf_mac_addresses, mac_addr, 6); 442 hw->mac.ops.set_rar(hw, rar_entry, mac_addr, vf, IXGBE_RAH_AV); 443 444 return 0; 445 } 446 447 static int ixgbe_set_vf_macvlan(struct ixgbe_adapter *adapter, 448 int vf, int index, unsigned char *mac_addr) 449 { 450 struct ixgbe_hw *hw = &adapter->hw; 451 struct list_head *pos; 452 struct vf_macvlans *entry; 453 454 if (index <= 1) { 455 list_for_each(pos, &adapter->vf_mvs.l) { 456 entry = list_entry(pos, struct vf_macvlans, l); 457 if (entry->vf == vf) { 458 entry->vf = -1; 459 entry->free = true; 460 entry->is_macvlan = false; 461 hw->mac.ops.clear_rar(hw, entry->rar_entry); 462 } 463 } 464 } 465 466 /* 467 * If index was zero then we were asked to clear the uc list 468 * for the VF. We're done. 469 */ 470 if (!index) 471 return 0; 472 473 entry = NULL; 474 475 list_for_each(pos, &adapter->vf_mvs.l) { 476 entry = list_entry(pos, struct vf_macvlans, l); 477 if (entry->free) 478 break; 479 } 480 481 /* 482 * If we traversed the entire list and didn't find a free entry 483 * then we're out of space on the RAR table. Also entry may 484 * be NULL because the original memory allocation for the list 485 * failed, which is not fatal but does mean we can't support 486 * VF requests for MACVLAN because we couldn't allocate 487 * memory for the list management required. 488 */ 489 if (!entry || !entry->free) 490 return -ENOSPC; 491 492 entry->free = false; 493 entry->is_macvlan = true; 494 entry->vf = vf; 495 memcpy(entry->vf_macvlan, mac_addr, ETH_ALEN); 496 497 hw->mac.ops.set_rar(hw, entry->rar_entry, mac_addr, vf, IXGBE_RAH_AV); 498 499 return 0; 500 } 501 502 int ixgbe_vf_configuration(struct pci_dev *pdev, unsigned int event_mask) 503 { 504 unsigned char vf_mac_addr[6]; 505 struct ixgbe_adapter *adapter = pci_get_drvdata(pdev); 506 unsigned int vfn = (event_mask & 0x3f); 507 508 bool enable = ((event_mask & 0x10000000U) != 0); 509 510 if (enable) { 511 eth_random_addr(vf_mac_addr); 512 e_info(probe, "IOV: VF %d is enabled MAC %pM\n", 513 vfn, vf_mac_addr); 514 /* 515 * Store away the VF "permananet" MAC address, it will ask 516 * for it later. 517 */ 518 memcpy(adapter->vfinfo[vfn].vf_mac_addresses, vf_mac_addr, 6); 519 } 520 521 return 0; 522 } 523 524 static inline void ixgbe_vf_reset_msg(struct ixgbe_adapter *adapter, u32 vf) 525 { 526 struct ixgbe_hw *hw = &adapter->hw; 527 u32 reg; 528 u32 reg_offset, vf_shift; 529 530 vf_shift = vf % 32; 531 reg_offset = vf / 32; 532 533 /* enable transmit and receive for vf */ 534 reg = IXGBE_READ_REG(hw, IXGBE_VFTE(reg_offset)); 535 reg |= (reg | (1 << vf_shift)); 536 IXGBE_WRITE_REG(hw, IXGBE_VFTE(reg_offset), reg); 537 538 reg = IXGBE_READ_REG(hw, IXGBE_VFRE(reg_offset)); 539 reg |= (reg | (1 << vf_shift)); 540 IXGBE_WRITE_REG(hw, IXGBE_VFRE(reg_offset), reg); 541 542 /* Enable counting of spoofed packets in the SSVPC register */ 543 reg = IXGBE_READ_REG(hw, IXGBE_VMECM(reg_offset)); 544 reg |= (1 << vf_shift); 545 IXGBE_WRITE_REG(hw, IXGBE_VMECM(reg_offset), reg); 546 547 ixgbe_vf_reset_event(adapter, vf); 548 } 549 550 static int ixgbe_rcv_msg_from_vf(struct ixgbe_adapter *adapter, u32 vf) 551 { 552 u32 mbx_size = IXGBE_VFMAILBOX_SIZE; 553 u32 msgbuf[IXGBE_VFMAILBOX_SIZE]; 554 struct ixgbe_hw *hw = &adapter->hw; 555 s32 retval; 556 int entries; 557 u16 *hash_list; 558 int add, vid, index; 559 u8 *new_mac; 560 561 retval = ixgbe_read_mbx(hw, msgbuf, mbx_size, vf); 562 563 if (retval) { 564 pr_err("Error receiving message from VF\n"); 565 return retval; 566 } 567 568 /* this is a message we already processed, do nothing */ 569 if (msgbuf[0] & (IXGBE_VT_MSGTYPE_ACK | IXGBE_VT_MSGTYPE_NACK)) 570 return retval; 571 572 /* flush the ack before we write any messages back */ 573 IXGBE_WRITE_FLUSH(hw); 574 575 /* 576 * until the vf completes a virtual function reset it should not be 577 * allowed to start any configuration. 578 */ 579 580 if (msgbuf[0] == IXGBE_VF_RESET) { 581 unsigned char *vf_mac = adapter->vfinfo[vf].vf_mac_addresses; 582 new_mac = (u8 *)(&msgbuf[1]); 583 e_info(probe, "VF Reset msg received from vf %d\n", vf); 584 adapter->vfinfo[vf].clear_to_send = false; 585 ixgbe_vf_reset_msg(adapter, vf); 586 adapter->vfinfo[vf].clear_to_send = true; 587 588 if (is_valid_ether_addr(new_mac) && 589 !adapter->vfinfo[vf].pf_set_mac) 590 ixgbe_set_vf_mac(adapter, vf, vf_mac); 591 else 592 ixgbe_set_vf_mac(adapter, 593 vf, adapter->vfinfo[vf].vf_mac_addresses); 594 595 /* reply to reset with ack and vf mac address */ 596 msgbuf[0] = IXGBE_VF_RESET | IXGBE_VT_MSGTYPE_ACK; 597 memcpy(new_mac, vf_mac, ETH_ALEN); 598 /* 599 * Piggyback the multicast filter type so VF can compute the 600 * correct vectors 601 */ 602 msgbuf[3] = hw->mac.mc_filter_type; 603 ixgbe_write_mbx(hw, msgbuf, IXGBE_VF_PERMADDR_MSG_LEN, vf); 604 605 return retval; 606 } 607 608 if (!adapter->vfinfo[vf].clear_to_send) { 609 msgbuf[0] |= IXGBE_VT_MSGTYPE_NACK; 610 ixgbe_write_mbx(hw, msgbuf, 1, vf); 611 return retval; 612 } 613 614 switch ((msgbuf[0] & 0xFFFF)) { 615 case IXGBE_VF_SET_MAC_ADDR: 616 new_mac = ((u8 *)(&msgbuf[1])); 617 if (is_valid_ether_addr(new_mac) && 618 !adapter->vfinfo[vf].pf_set_mac) { 619 ixgbe_set_vf_mac(adapter, vf, new_mac); 620 } else if (memcmp(adapter->vfinfo[vf].vf_mac_addresses, 621 new_mac, ETH_ALEN)) { 622 e_warn(drv, "VF %d attempted to override " 623 "administratively set MAC address\nReload " 624 "the VF driver to resume operations\n", vf); 625 retval = -1; 626 } 627 break; 628 case IXGBE_VF_SET_MULTICAST: 629 entries = (msgbuf[0] & IXGBE_VT_MSGINFO_MASK) 630 >> IXGBE_VT_MSGINFO_SHIFT; 631 hash_list = (u16 *)&msgbuf[1]; 632 retval = ixgbe_set_vf_multicasts(adapter, entries, 633 hash_list, vf); 634 break; 635 case IXGBE_VF_SET_LPE: 636 ixgbe_set_vf_lpe(adapter, msgbuf); 637 break; 638 case IXGBE_VF_SET_VLAN: 639 add = (msgbuf[0] & IXGBE_VT_MSGINFO_MASK) 640 >> IXGBE_VT_MSGINFO_SHIFT; 641 vid = (msgbuf[1] & IXGBE_VLVF_VLANID_MASK); 642 if (adapter->vfinfo[vf].pf_vlan) { 643 e_warn(drv, "VF %d attempted to override " 644 "administratively set VLAN configuration\n" 645 "Reload the VF driver to resume operations\n", 646 vf); 647 retval = -1; 648 } else { 649 if (add) 650 adapter->vfinfo[vf].vlan_count++; 651 else if (adapter->vfinfo[vf].vlan_count) 652 adapter->vfinfo[vf].vlan_count--; 653 retval = ixgbe_set_vf_vlan(adapter, add, vid, vf); 654 if (!retval && adapter->vfinfo[vf].spoofchk_enabled) 655 hw->mac.ops.set_vlan_anti_spoofing(hw, true, vf); 656 } 657 break; 658 case IXGBE_VF_SET_MACVLAN: 659 index = (msgbuf[0] & IXGBE_VT_MSGINFO_MASK) >> 660 IXGBE_VT_MSGINFO_SHIFT; 661 if (adapter->vfinfo[vf].pf_set_mac && index > 0) { 662 e_warn(drv, "VF %d requested MACVLAN filter but is " 663 "administratively denied\n", vf); 664 retval = -1; 665 break; 666 } 667 /* 668 * If the VF is allowed to set MAC filters then turn off 669 * anti-spoofing to avoid false positives. An index 670 * greater than 0 will indicate the VF is setting a 671 * macvlan MAC filter. 672 */ 673 if (index > 0 && adapter->vfinfo[vf].spoofchk_enabled) 674 ixgbe_ndo_set_vf_spoofchk(adapter->netdev, vf, false); 675 retval = ixgbe_set_vf_macvlan(adapter, vf, index, 676 (unsigned char *)(&msgbuf[1])); 677 if (retval == -ENOSPC) 678 e_warn(drv, "VF %d has requested a MACVLAN filter " 679 "but there is no space for it\n", vf); 680 break; 681 default: 682 e_err(drv, "Unhandled Msg %8.8x\n", msgbuf[0]); 683 retval = IXGBE_ERR_MBX; 684 break; 685 } 686 687 /* notify the VF of the results of what it sent us */ 688 if (retval) 689 msgbuf[0] |= IXGBE_VT_MSGTYPE_NACK; 690 else 691 msgbuf[0] |= IXGBE_VT_MSGTYPE_ACK; 692 693 msgbuf[0] |= IXGBE_VT_MSGTYPE_CTS; 694 695 ixgbe_write_mbx(hw, msgbuf, 1, vf); 696 697 return retval; 698 } 699 700 static void ixgbe_rcv_ack_from_vf(struct ixgbe_adapter *adapter, u32 vf) 701 { 702 struct ixgbe_hw *hw = &adapter->hw; 703 u32 msg = IXGBE_VT_MSGTYPE_NACK; 704 705 /* if device isn't clear to send it shouldn't be reading either */ 706 if (!adapter->vfinfo[vf].clear_to_send) 707 ixgbe_write_mbx(hw, &msg, 1, vf); 708 } 709 710 void ixgbe_msg_task(struct ixgbe_adapter *adapter) 711 { 712 struct ixgbe_hw *hw = &adapter->hw; 713 u32 vf; 714 715 for (vf = 0; vf < adapter->num_vfs; vf++) { 716 /* process any reset requests */ 717 if (!ixgbe_check_for_rst(hw, vf)) 718 ixgbe_vf_reset_event(adapter, vf); 719 720 /* process any messages pending */ 721 if (!ixgbe_check_for_msg(hw, vf)) 722 ixgbe_rcv_msg_from_vf(adapter, vf); 723 724 /* process any acks */ 725 if (!ixgbe_check_for_ack(hw, vf)) 726 ixgbe_rcv_ack_from_vf(adapter, vf); 727 } 728 } 729 730 void ixgbe_disable_tx_rx(struct ixgbe_adapter *adapter) 731 { 732 struct ixgbe_hw *hw = &adapter->hw; 733 734 /* disable transmit and receive for all vfs */ 735 IXGBE_WRITE_REG(hw, IXGBE_VFTE(0), 0); 736 IXGBE_WRITE_REG(hw, IXGBE_VFTE(1), 0); 737 738 IXGBE_WRITE_REG(hw, IXGBE_VFRE(0), 0); 739 IXGBE_WRITE_REG(hw, IXGBE_VFRE(1), 0); 740 } 741 742 void ixgbe_ping_all_vfs(struct ixgbe_adapter *adapter) 743 { 744 struct ixgbe_hw *hw = &adapter->hw; 745 u32 ping; 746 int i; 747 748 for (i = 0 ; i < adapter->num_vfs; i++) { 749 ping = IXGBE_PF_CONTROL_MSG; 750 if (adapter->vfinfo[i].clear_to_send) 751 ping |= IXGBE_VT_MSGTYPE_CTS; 752 ixgbe_write_mbx(hw, &ping, 1, i); 753 } 754 } 755 756 int ixgbe_ndo_set_vf_mac(struct net_device *netdev, int vf, u8 *mac) 757 { 758 struct ixgbe_adapter *adapter = netdev_priv(netdev); 759 if (!is_valid_ether_addr(mac) || (vf >= adapter->num_vfs)) 760 return -EINVAL; 761 adapter->vfinfo[vf].pf_set_mac = true; 762 dev_info(&adapter->pdev->dev, "setting MAC %pM on VF %d\n", mac, vf); 763 dev_info(&adapter->pdev->dev, "Reload the VF driver to make this" 764 " change effective."); 765 if (test_bit(__IXGBE_DOWN, &adapter->state)) { 766 dev_warn(&adapter->pdev->dev, "The VF MAC address has been set," 767 " but the PF device is not up.\n"); 768 dev_warn(&adapter->pdev->dev, "Bring the PF device up before" 769 " attempting to use the VF device.\n"); 770 } 771 return ixgbe_set_vf_mac(adapter, vf, mac); 772 } 773 774 int ixgbe_ndo_set_vf_vlan(struct net_device *netdev, int vf, u16 vlan, u8 qos) 775 { 776 int err = 0; 777 struct ixgbe_adapter *adapter = netdev_priv(netdev); 778 struct ixgbe_hw *hw = &adapter->hw; 779 780 if ((vf >= adapter->num_vfs) || (vlan > 4095) || (qos > 7)) 781 return -EINVAL; 782 if (vlan || qos) { 783 err = ixgbe_set_vf_vlan(adapter, true, vlan, vf); 784 if (err) 785 goto out; 786 ixgbe_set_vmvir(adapter, vlan | (qos << VLAN_PRIO_SHIFT), vf); 787 ixgbe_set_vmolr(hw, vf, false); 788 if (adapter->vfinfo[vf].spoofchk_enabled) 789 hw->mac.ops.set_vlan_anti_spoofing(hw, true, vf); 790 adapter->vfinfo[vf].vlan_count++; 791 adapter->vfinfo[vf].pf_vlan = vlan; 792 adapter->vfinfo[vf].pf_qos = qos; 793 dev_info(&adapter->pdev->dev, 794 "Setting VLAN %d, QOS 0x%x on VF %d\n", vlan, qos, vf); 795 if (test_bit(__IXGBE_DOWN, &adapter->state)) { 796 dev_warn(&adapter->pdev->dev, 797 "The VF VLAN has been set," 798 " but the PF device is not up.\n"); 799 dev_warn(&adapter->pdev->dev, 800 "Bring the PF device up before" 801 " attempting to use the VF device.\n"); 802 } 803 } else { 804 err = ixgbe_set_vf_vlan(adapter, false, 805 adapter->vfinfo[vf].pf_vlan, vf); 806 ixgbe_set_vmvir(adapter, vlan, vf); 807 ixgbe_set_vmolr(hw, vf, true); 808 hw->mac.ops.set_vlan_anti_spoofing(hw, false, vf); 809 if (adapter->vfinfo[vf].vlan_count) 810 adapter->vfinfo[vf].vlan_count--; 811 adapter->vfinfo[vf].pf_vlan = 0; 812 adapter->vfinfo[vf].pf_qos = 0; 813 } 814 out: 815 return err; 816 } 817 818 static int ixgbe_link_mbps(struct ixgbe_adapter *adapter) 819 { 820 switch (adapter->link_speed) { 821 case IXGBE_LINK_SPEED_100_FULL: 822 return 100; 823 case IXGBE_LINK_SPEED_1GB_FULL: 824 return 1000; 825 case IXGBE_LINK_SPEED_10GB_FULL: 826 return 10000; 827 default: 828 return 0; 829 } 830 } 831 832 static void ixgbe_set_vf_rate_limit(struct ixgbe_adapter *adapter, int vf) 833 { 834 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ]; 835 struct ixgbe_hw *hw = &adapter->hw; 836 u32 bcnrc_val = 0; 837 u16 queue, queues_per_pool; 838 u16 tx_rate = adapter->vfinfo[vf].tx_rate; 839 840 if (tx_rate) { 841 /* start with base link speed value */ 842 bcnrc_val = adapter->vf_rate_link_speed; 843 844 /* Calculate the rate factor values to set */ 845 bcnrc_val <<= IXGBE_RTTBCNRC_RF_INT_SHIFT; 846 bcnrc_val /= tx_rate; 847 848 /* clear everything but the rate factor */ 849 bcnrc_val &= IXGBE_RTTBCNRC_RF_INT_MASK | 850 IXGBE_RTTBCNRC_RF_DEC_MASK; 851 852 /* enable the rate scheduler */ 853 bcnrc_val |= IXGBE_RTTBCNRC_RS_ENA; 854 } 855 856 /* 857 * Set global transmit compensation time to the MMW_SIZE in RTTBCNRM 858 * register. Typically MMW_SIZE=0x014 if 9728-byte jumbo is supported 859 * and 0x004 otherwise. 860 */ 861 switch (hw->mac.type) { 862 case ixgbe_mac_82599EB: 863 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRM, 0x4); 864 break; 865 case ixgbe_mac_X540: 866 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRM, 0x14); 867 break; 868 default: 869 break; 870 } 871 872 /* determine how many queues per pool based on VMDq mask */ 873 queues_per_pool = __ALIGN_MASK(1, ~vmdq->mask); 874 875 /* write value for all Tx queues belonging to VF */ 876 for (queue = 0; queue < queues_per_pool; queue++) { 877 unsigned int reg_idx = (vf * queues_per_pool) + queue; 878 879 IXGBE_WRITE_REG(hw, IXGBE_RTTDQSEL, reg_idx); 880 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRC, bcnrc_val); 881 } 882 } 883 884 void ixgbe_check_vf_rate_limit(struct ixgbe_adapter *adapter) 885 { 886 int i; 887 888 /* VF Tx rate limit was not set */ 889 if (!adapter->vf_rate_link_speed) 890 return; 891 892 if (ixgbe_link_mbps(adapter) != adapter->vf_rate_link_speed) { 893 adapter->vf_rate_link_speed = 0; 894 dev_info(&adapter->pdev->dev, 895 "Link speed has been changed. VF Transmit rate is disabled\n"); 896 } 897 898 for (i = 0; i < adapter->num_vfs; i++) { 899 if (!adapter->vf_rate_link_speed) 900 adapter->vfinfo[i].tx_rate = 0; 901 902 ixgbe_set_vf_rate_limit(adapter, i); 903 } 904 } 905 906 int ixgbe_ndo_set_vf_bw(struct net_device *netdev, int vf, int tx_rate) 907 { 908 struct ixgbe_adapter *adapter = netdev_priv(netdev); 909 int link_speed; 910 911 /* verify VF is active */ 912 if (vf >= adapter->num_vfs) 913 return -EINVAL; 914 915 /* verify link is up */ 916 if (!adapter->link_up) 917 return -EINVAL; 918 919 /* verify we are linked at 10Gbps */ 920 link_speed = ixgbe_link_mbps(adapter); 921 if (link_speed != 10000) 922 return -EINVAL; 923 924 /* rate limit cannot be less than 10Mbs or greater than link speed */ 925 if (tx_rate && ((tx_rate <= 10) || (tx_rate > link_speed))) 926 return -EINVAL; 927 928 /* store values */ 929 adapter->vf_rate_link_speed = link_speed; 930 adapter->vfinfo[vf].tx_rate = tx_rate; 931 932 /* update hardware configuration */ 933 ixgbe_set_vf_rate_limit(adapter, vf); 934 935 return 0; 936 } 937 938 int ixgbe_ndo_set_vf_spoofchk(struct net_device *netdev, int vf, bool setting) 939 { 940 struct ixgbe_adapter *adapter = netdev_priv(netdev); 941 int vf_target_reg = vf >> 3; 942 int vf_target_shift = vf % 8; 943 struct ixgbe_hw *hw = &adapter->hw; 944 u32 regval; 945 946 adapter->vfinfo[vf].spoofchk_enabled = setting; 947 948 regval = IXGBE_READ_REG(hw, IXGBE_PFVFSPOOF(vf_target_reg)); 949 regval &= ~(1 << vf_target_shift); 950 regval |= (setting << vf_target_shift); 951 IXGBE_WRITE_REG(hw, IXGBE_PFVFSPOOF(vf_target_reg), regval); 952 953 if (adapter->vfinfo[vf].vlan_count) { 954 vf_target_shift += IXGBE_SPOOF_VLANAS_SHIFT; 955 regval = IXGBE_READ_REG(hw, IXGBE_PFVFSPOOF(vf_target_reg)); 956 regval &= ~(1 << vf_target_shift); 957 regval |= (setting << vf_target_shift); 958 IXGBE_WRITE_REG(hw, IXGBE_PFVFSPOOF(vf_target_reg), regval); 959 } 960 961 return 0; 962 } 963 964 int ixgbe_ndo_get_vf_config(struct net_device *netdev, 965 int vf, struct ifla_vf_info *ivi) 966 { 967 struct ixgbe_adapter *adapter = netdev_priv(netdev); 968 if (vf >= adapter->num_vfs) 969 return -EINVAL; 970 ivi->vf = vf; 971 memcpy(&ivi->mac, adapter->vfinfo[vf].vf_mac_addresses, ETH_ALEN); 972 ivi->tx_rate = adapter->vfinfo[vf].tx_rate; 973 ivi->vlan = adapter->vfinfo[vf].pf_vlan; 974 ivi->qos = adapter->vfinfo[vf].pf_qos; 975 ivi->spoofchk = adapter->vfinfo[vf].spoofchk_enabled; 976 return 0; 977 } 978